diff --git a/pkgs/development/perl-modules/catalyst-plugin-static-simple-etag.patch b/pkgs/development/perl-modules/catalyst-plugin-static-simple-etag.patch
new file mode 100644
index 000000000000..6433cf296630
--- /dev/null
+++ b/pkgs/development/perl-modules/catalyst-plugin-static-simple-etag.patch
@@ -0,0 +1,29 @@
+Send an ETag header, and honour the If-None-Match request header
+
+diff -ru -x '*~' Catalyst-Plugin-Static-Simple-0.30-orig/lib/Catalyst/Plugin/Static/Simple.pm Catalyst-Plugin-Static-Simple-0.30/lib/Catalyst/Plugin/Static/Simple.pm
+--- Catalyst-Plugin-Static-Simple-0.30-orig/lib/Catalyst/Plugin/Static/Simple.pm	2012-05-04 18:49:30.000000000 +0200
++++ Catalyst-Plugin-Static-Simple-0.30/lib/Catalyst/Plugin/Static/Simple.pm	2013-02-25 18:05:08.466813337 +0100
+@@ -187,11 +187,21 @@
+     my $type      = $c->_ext_to_type( $full_path );
+     my $stat      = stat $full_path;
+ 
++    # Tell Firefox & friends its OK to cache, even over SSL:
++    #$c->res->headers->header('Cache-control' => 'public');
++
++    if ($config->{send_etag}) {
++        my $etag = '"' . $stat->mtime . '-' . $stat->ino . '-'. $stat->size . '"';
++        $c->res->headers->header('ETag' => $etag);
++        if (($c->req->header('If-None-Match') // "") eq $etag) {
++            $c->res->status(304);
++            return 1;
++        }
++    }
++
+     $c->res->headers->content_type( $type );
+     $c->res->headers->content_length( $stat->size );
+     $c->res->headers->last_modified( $stat->mtime );
+-    # Tell Firefox & friends its OK to cache, even over SSL:
+-    $c->res->headers->header('Cache-control' => 'public');
+     # Optionally, set a fixed expiry time:
+     if ($config->{expires}) {
+         $c->res->headers->expires(time() + $config->{expires});
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index a51abf44ff24..0c2bfa1ec0b1 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -590,6 +590,7 @@ rec {
       url = mirror://cpan/authors/id/A/AB/ABRAXXA/Catalyst-Plugin-Static-Simple-0.30.tar.gz;
       sha256 = "18zar1n4imgnv7b4dr5sxyikry4668ngqgc6f0dr210bqafvwv7w";
     };
+    patches = [ ../development/perl-modules/catalyst-plugin-static-simple-etag.patch ];
     propagatedBuildInputs = [ CatalystRuntime MIMETypes Moose MooseXTypes namespaceautoclean ];
     meta = {
       description = "Make serving static pages painless";